Temu customer service.

Good day, i have purchased 4 dresses from temu which costs R1956 and as a first temu customer i though with online when the oder arrives at the warehouse in south Africa i will receive an sms or email to select my preferable courier and pay for the custom but no instead the Linex solution send a WhatsApp for the payment of R625 custom which i find it very odd , then i called the linex company and explained also asked if its possible to personally collect my package which i was told its not possible i must the R R625 for the custom and for which iam willing to such high amount then asked for the package to bw return back to China so that i can get my refund, the lady advised to communicate with temu customer service for the package to be able to be send back to China which i did for days almost every day but i can't be assisted.